EMS CATALOG NO: 21900
EMS PRODUCT: TCH
DATE: 02/12/2001
PAGE NUMBER: ONE OF 5
MATERIAL SAFETY DATA SHEET
THE INFORMATION CONTAINED HEREIN IS BASED ON DATA CONSIDERED
ACCURATE. HOWEVER, NO WARRANTY IS EXPRESSED OR IMPLIED
REGARDING THE ACCURACY OF THESE DATA OR THE RESULTS TO BE
OBTAINED FROM THE USE THEREOF.
ELECTRON MICROSCOPY SCIENCES ASSUMES NO RESPONSIBILITY FOR
PERSONAL INJURY OR PROPERTY DAMAGE TO VENDEES, USERS OR
THIRD PARTIES CAUSED BY THE MATERIAL. SUCH VENDEES OR USERS
ASSUME ALL RISKS ASSOCIATED WITH THE USE OF THE MATERIAL.
ELECTRON MICROSCOPY SCIENCES
321 MORRIS ROAD
P.O. BOX 251
FORT WASHINGTON, PA 19034 24 HOUR EMERGENCY PHONE NUMBER
(215) 646-1566 CHEMTREC: (800) 424-9300
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FOR PRODUCT AND SALES INFORMATION
_________________________________________________________________
CONTACT ELECTRON MICROSCOPY SCIENCES OFFICE ABOVE.
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PRODUCT IDENTIFICATION
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PRODUCT NAME: THIOCARBOHYDRAZIDE, FOR ELECTRON MICROSCOPY.
CAS NUMBER: 2231-57-4
MOLECULAR FORMULA: CH6N4S
SYNONYMS: CARBONOTHIOIC DIHYDRAZIDE (9CI); HYDRAZINECARBO-
HYDRAZONOTHIOIC ACID; TCH, THIOCARBAZIDE;
THIOCARBOHYDRAZIDE; THIOCARBONIC DIHYDRAZIDE;
THIOCARBONOHYDRAZIDE; USAF EK-7372
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HAZARDS IDENTIFICATION
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LABEL PRECAUTIONARY STATEMENTS
HIGHLY TOXIC (USA)
1
VERY TOXIC (EU)
VERY TOXIC BY INHALATION, IN CONTACT WITH SKIN AND IF
SWALLOWED.
HEATING MAY CAUSE AN EXPLOSION.
IN CASE OF ACCIDENT OR IF YOU FEEL UNWELL, SEEK MEDICAL
ADVICE. IMMEDIATELY (SHOW THE LABE WHERE POSSIBLE).
WEAR SUITABLE PROTECTIVE CLOTHING, GLOVES AND EYE/FACE
PROTECTION..
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FIRST AID MEASURES
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IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES OR SKIN WITH
COPIOUS AMOUNTS OF WATER FOR AT LEAST 15 MINUTES WHILE
REMOVING CONTAMINATED CLOTHING AND SHOES.
IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING GIVE
ARTIVICIAL RESPIRATION. IF BREATHING IS DIFFICULT, GIVE
OXYGEN.
IF SWALLOWED, WASH OUT MOUTH WITH WATER PROVIDED PERSON IS
CONSCIOUS. CALL A PHYSICIAN.
WASH CONTAMINATED CLOTHING BEFORE REUSE.
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FIRE FIGHTING MEASURES
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EXTINGUISHING MEDIA
WATER SPRAY.
CARBON DIOXIDE, DRY CHEMICAL POWDER OR APPROPRIATE FOAM.
SPECIAL FIRE FIGHTING PROCEDURES
WEAR SELF-CONTAINED BREATHING APPARATUS AND PROTECTIVE
CLOTHING TO PREVENT CONTACT WITH SKIN AND EYES.
MAY EXPLODE WHEN HEATED.
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ACCIDENTAL RELEASE MEASURES
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WEAR SELF-CONTAINED BREATHING APPARATUS, RUBBER BOOTS AND
HEAVY RUBBER GLOVES.
SWEEP UP, PLACE IN A BAG AND HOLD FOR WASTE DISPOSAL.
AVOID RAISING DUST.
VENTILATE AREA AND WASH SPILL SITE AFTER MATERIAL PICKUP IS
COMPLETE.
2
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HANDLING AND STORAGE
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REFER TO SECTION - EXPOSURE CONTROLS/PERSONAL PROTECTION
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EXPOSURE CONTROLS/PERSONAL PROTECTION
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WEAR APPROPRIATE NIOSH/MSHA-APPROVED RESPIRATOR,
CHEMICAL-RESISTANT GOLOVES, SAFETY GOGGLES, OTHER
PROTECTIVE CLOTHING.
SAFETY SHOWER AND EYE BATH.
USE ONLY IN A CHEMICAL FUME HOOD.
DO NOT BREATHE DUST.
AVOID CONTACT WITH EYES, SKIN AND CLOTHING.
AVOID PROLONGED OR REPEATED EXPOSURE.
WASH THOROUGHLY AFTER HANDLING.
HIGHLY TOXIC.
KEEP TIGHTLY CLOSED.
STORE IN A COOL DRY PLACE
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PHYSICAL AND CHEMICAL PROPERTIES
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APPEARANCE AND ODOR: WHITE CRYTALLINE POWDER.
PHYSICAL PROPERTIES: MELTING POINT: 171oC TO 174oC
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STABILITY AND REACTIVITY
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INCOMPATIBILITIES:
STRONG OXIDIZING AGENTS
STRON ACIDS
STORE AWAY FROM HEAT AND DIRECT SUNLIGHT.
HAZARDOUS COMBUSTION OR DECOMPOSITION PRODUCTS
TOXIC FUMES OF:
CARBON MONOXIDE, CARBON DIOXIDE
NITROGEN OXIDES
SULFUR OXIDES
3
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TOXICOLOGICAL INFORMATION
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ACUTE EFFECTS
MAY BE FATAL IF INHALED, SWALLOWED, OR ABSORBED THROUGH
SKIN.
MAY CAUSE IRRITATION
TO THE BEST OF OUR KNOWLEDGE, THE CHEMICAL, PHYSICAL, AND
TOXICOLOGICAL PROPERTIES HAVE NOT BEEN THOROUGHLY
INVESTIGATED.
RTECS #: FF2975000
CARBOHYDRAZIDE, THIO-
IRRITATION DATA
EYE-RBT 50 MG MLD MTPEEI (2),43,1994
TOXICITY DATA
ORL-RAT LD50: 21600 UG/KG MTPEEI (2), 43, 1994
IHL-RAT LC50: 50 MG/M3/4H NTIS ** 0TS0555465
SKN-RAT LD 50:>500 MG/KG NTIS ** 0TS0555465
ORL-MUS LD50: 6 MG/KG MTPEEI (2), 43, 1994
IPR-MUS LD50: 5 MG/KG NTIS ** AD277-689
ORL-GPG LD50: 8200 UG/KG MTPEEI (2), 43, 1994
TARGET ORGAN DATA
BEHAVIORAL (SOMNOLENCE)
BEHAVIORAL (CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD)
LUNGS, THORAX OR RESPIRATIOIN (DYPSPNAE)
ONLY SELECTED REGISTRY OF TOXIC EFFECTS OF CHEMICAL
SUBSTANCES (RTECS) DATA IS PRESENTED HERE. SEE ACTUAL
ENTRY IN RTECS FOR COMPLETE INFORMATION.
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ECOLOGICAL INFORMATION
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DATA NOT YET AVAILABLE.
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DISPOSAL CONSIDERATIONS
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CONTACT A LICENSED PROFESSIONAL WASTE DISPOSAL SERVICE TO
DISPOSE OF THIS MATERIAL.
OBSERVE ALL FEDERAL, STATE AND LOCAL ENVIRONMENTAL
REGULATIONS.
4
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REGULATORY INFORMATION
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EUROPEAN INFORMATION
VERY TOXIC
R 26/27/28
VERY TOXIC BY INHALATION, IN CONTACT WITH SKIN AND IF
SWALLOWED.
R5
HEATING MAY CAUSE AN EXPLOSION.
S 45
IN CASE OF ACCIDENT OR IF YOU FEEL UNWELL, SEEK MEDICAL
ADVICE IMMEDIATELY (SHOW THE LABEL WHERE POSSIBLE).
S 36/37/39
WEAR SUITABLE PROTECTIVE CLOTHING, GLOVES ANS EYE/FACE
PROTECTION.
REVIEWS, STANDARDS, AND REGULATIONS
OEL=MAK
EPA TSCA SECTION 8 (B) CHEMICAL INVENTORY
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
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